Dunlop Express Wet Area Waterproofing Membrane is a high-performance, fast-drying liquid membrane designed for use in internal wet areas including bathrooms, showers, laundries, and kitchens. This flexible, water-based acrylic polyurethane formulation creates a seamless and highly durable waterproof barrier that is tile-ready within hours.

It’s suitable for use under tile adhesives, screeds, and other flooring products. The product forms a tough, elastomeric layer that resists movement, cracking, and water penetration. It meets the requirements of Class III membranes and is suitable for both floor and wall applications.

Surface Preparation:
Ensure all surfaces are clean, dry, and structurally sound. Remove dust, grease, oil, curing compounds, and loose or flaking materials. Prime all surfaces using a compatible primer. On porous or highly absorbent surfaces, apply a second primer coat if needed. Any existing cracks, gaps, or joints should be sealed or reinforced using bond breakers or reinforcing fabric.

Application Instructions:

• Apply the membrane using a brush or roller.

• Two coats are required for effective waterproofing.

• First coat should be applied in one direction.

• Once dry to the touch (approx. 2 hours), apply the second coat in the opposite direction.

• Membrane should extend at least 150mm up walls in general wet areas and 1.8m in shower recesses.

• Waterproofing must be applied continuously and without breaks or pinholes.

• Use reinforcing fabric over joints and corners if required.

• Avoid application in conditions below 10°C or above 35°C.

Coverage:
Approximately 1m² per litre per coat. A 5kg pail covers roughly 2.5m² with two coats, depending on surface porosity.

Drying Time:

• Touch dry: 1–2 hours

• Recoat time: 2 hours

• Ready for tiling: 4–6 hours

• Fully cured: 24 hours
  Drying times will vary with ambient temperature and humidity.

Clean Up:
Clean tools and equipment immediately after use with water. Do not allow membrane to dry on tools.

Technical Data:

• Type: Water-based acrylic polyurethane

• Classification: Class III membrane

• Application Method: Brush or roller

• Flexibility: High

• Water Resistance: Excellent

• Colour: Grey

• Shelf Life: 12 months (unopened in cool, dry conditions)